Field-ion microscope

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field-emission microscopes

A development of the field-emission microscope is the
field-ion microscope, in which the tip is surrounded by a low pressure of helium gas. The gas is ionized at the atom planes on the tip and produces an image that can have a magnification of up to 10,000,000×. The
field-ion microscope has been applied mainly to the study of metals and semiconductors, but a few biological images have...

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